/*
* Copyright 2003-2015 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package jetbrains.mps.ide.projectPane.logicalview.highlighting.visitor;
import jetbrains.mps.ide.projectPane.logicalview.highlighting.visitor.updates.NodeUpdate;
import jetbrains.mps.ide.projectPane.logicalview.highlighting.visitor.updates.TreeNodeUpdater;
import jetbrains.mps.ide.ui.tree.MPSTreeNode;
import jetbrains.mps.ide.ui.tree.TreeNodeVisitor;
import jetbrains.mps.ide.ui.tree.module.NamespaceTextNode;
import jetbrains.mps.ide.ui.tree.module.ProjectModuleTreeNode;
import jetbrains.mps.ide.ui.tree.module.ProjectTreeNode;
import jetbrains.mps.ide.ui.tree.smodel.SModelTreeNode;
import jetbrains.mps.project.Project;
import jetbrains.mps.smodel.ModelReadRunnable;
import org.jetbrains.annotations.NotNull;
import java.util.concurrent.Executor;
/**
* Visitor that updates tree elements
*/
public abstract class TreeUpdateVisitor implements TreeNodeVisitor {
protected final Project myProject;
private TreeNodeUpdater myUpdater;
private Executor myExecutor;
protected TreeUpdateVisitor(@NotNull Project mpsProject) {
myProject = mpsProject;
}
@Override
public void visitNamespaceNode(@NotNull NamespaceTextNode node) {
}
@Override
public void visitModuleNode(@NotNull ProjectModuleTreeNode node) {
}
@Override
public void visitProjectNode(@NotNull ProjectTreeNode node) {
}
@Override
public void visitModelNode(@NotNull SModelTreeNode node) {
}
protected final void scheduleModelRead(final MPSTreeNode node, final Runnable readAction) {
schedule(node, new ModelReadRunnable(myProject.getModelAccess(), readAction));
}
protected final void schedule(final MPSTreeNode node, final Runnable runnable) {
final Executor ex = myExecutor;
if (ex == null) {
return;
}
ex.execute(new Runnable() {
@Override
public void run() {
boolean disposed = node.getTree() == null;
if (disposed) {
return;
}
runnable.run();
}
});
}
protected void addUpdate(MPSTreeNode node, NodeUpdate r) {
final TreeNodeUpdater u = myUpdater;
if (u != null) {
u.addUpdate(node, r);
}
}
public TreeUpdateVisitor setUpdater(TreeNodeUpdater updater) {
myUpdater = updater;
return this;
}
public TreeUpdateVisitor setExecutor(Executor executor) {
myExecutor = executor;
return this;
}
}